STV GROUP a.s. is one of the leading companies in the Czech defence industry. Its main activity is the production of small-, medium-, and large-calibre ammunition, including tank and artillery ammunition, plastic explosives, and ammunition for special engineer use. The company provides repairs and modernisation of heavy military equipment. It fulfils contracts for both Czech and foreign customers in the field of life-cycle support and modernisation of tank equipment, infantry fighting vehicles, and artillery systems. FENIX Protector, a member of the holding, produces ballistic protection equipment. DEUS Automation, another member of the holding, designs and manufactures production lines for small-, medium-, and large-calibre ammunition.